John Walter Irvine, MD
Internal Medicine Physician · Eureka, CA
John Walter Irvine, MD is an internal medicine physician with a practice address in Eureka, California, and NPI 1861598419, issued on Sep 14, 2006. Check the license (California A23597, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John Walter Irvine
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A23597 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2280 Harrison Ave, Eureka, CA 95501
- Phone
- (707) 443-9371
- Enumerated
- Sep 14, 2006
- Record last updated
- Jun 28, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid ID
- 00A235970 CA
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2280 Harrison Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gloria Abels, MDInternal Medicine Physician1235236662
- Peter Aronson, PA-CPhysician Assistant1891891479
- Lyndsey Chamberlain, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1912411380
- Amber Flowers, FNPFamily Nurse Practitioner1164897179
- Patricia Handshy, FNPFamily Nurse Practitioner1477659753
- Rachel Hatchimonji, FNPFamily Nurse Practitioner1023480126
Verify John Walter Irvine in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A23597Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John Walter Irvine among 17,696 internal medicine physician records in California
John Walter Irvine, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileNo · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2011 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in California
There are 17,696 internal medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 17,696 in California → Every provider in Eureka → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Gloria Abels, MDEureka, CA 955011235236662
- Malia Honda, M.D., M.S.Eureka, CA 955011689094989
- Bruce Kessler, MDEureka, CA 955011811093461
- Neil Kushner, MDEureka, CA 955011902905458
- Win Kyin, MDEureka, CA 955011902759525
- Eurides Lopes, M.D.Eureka, CA 955011447511803
- Shekhar Pai, M.D.Eureka, CA 955011134488026
- Steven Paul, M.D.Eureka, CA 955011467417725
Common questions
What is John Walter Irvine, MD's NPI number?
John Walter Irvine, MD's National Provider Identifier (NPI) is 1861598419, issued on Sep 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Walter Irvine, MD located?
The NPPES record lists a practice address at 2280 Harrison Ave, Eureka, CA, 95501. Phone: (707) 443-9371. Providers update this record themselves, so call before visiting.
How can I verify John Walter Irvine, MD's license?
NPPES lists California license number A23597, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.